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annotate packages/devs/eth/arm/ebsa285/current/ChangeLog @ 88:afdeb44241de ecos-sw-2000-05-12

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Merge from eCos master repository on 2000-05-12-07:47:04-BST
author jlarmour
date Fri, 12 May 2000 17:53:32 +0000
parents 489eb5632bc3
children 70190fa0fe10
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1 2000-05-11 Hugo Tyson <hmt@cygnus.co.uk>
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2
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3 * cdl/ebsa285_eth_drivers.cdl: Added export of the test header
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4 below, and config opts for controlling EEPROM writing and all the
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5 status chatter as the device starts up.
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6
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7 * src/if_ebsa285.c: Reworked the code for reading and setting the
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8 EEPROM that holds the MAC address. This is very ugly, but now
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9 more reliable. Also tidied up printing cruft with neater
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10 configury, and made it an option (for safety) whether it's
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11 possible to write the EEPROM at all.
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12
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13 * tests/test_net_realtime.h: New file - it is intended to be used
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14 by networking tests to verify that latency is not compromised by
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15 the stack and driver. It's very platform specific, hence the
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16 location in here. This is a preliminary version only.
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17
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18 2000-04-27 Hugo Tyson <hmt@cygnus.co.uk>
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19
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20 * src/if_ebsa285.c: A serious re-write. This cuts out a lot of
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21 code from the old version and improves the performance greatly.
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22
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23 The cruft was mainly doing lots of explicit event communication
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24 between the ISR and DSR, when in fact all the state needed is
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25 present in the tx/rx rings. So both ISRs and DSRs regard their
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26 call as an opportunity to progress everything they can, rather
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27 than only dealing with one interrupt cause at a time; the
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28 connection between them is now rather looser.
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29
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30 Interrups can now be re-enabled after the ISR (in other words they
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31 are not masked in the ISR), no need to wait for the DSR, but in
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32 consequence some DSR code must mask/unmask intrs as it works.
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33
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34 The 82559 appears to be a little slow in reacting to commands and
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35 state changes, so some interrupts were being lost - or persisting
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36 beyond their desired life - so there's some kinda polling code to
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37 deal with that also. We also rely on the foreground to kind of
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38 poll in the same way, in the send/can_send calls - we know the
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39 stack will re-try if necessary, though this is rare.
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40
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41 The driver now works (albeit at much reduced performance) with as
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42 few as 6 rx and tx buffers - in other words the "queue full/out of
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43 rx buffers" states have been tested and all is well. It works
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44 generally fine with 8 buffers of each kind.
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45
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46 The mux ISR and DSR are now rather more polled than the old
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47 versions; we just try to do things with both devices (if active)
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48 by simply calling each unitary ISR/DSR respectively.
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49
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50 I also re-ordered some of the code, moving utilities to the end of
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51 the file and grouping together Tx and Rx machines a bit better.
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52
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53 2000-04-13 Hugo Tyson <hmt@cygnus.co.uk>
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54
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55 * src/if_ebsa285.c: Attribution to Ron Spence, Pacific Softworks
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56 added as a contributor.
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57
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58 2000-04-07 Hugo Tyson <hmt@cygnus.co.uk>
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59
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60 * ecos.db: Re-organize device packages. This is a massive change
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61 involving deleting all the sources for serial and ethernet drivers
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62 from where they used to live in
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63 packages/io/serial/current/src/ARCH/PLATFORM.[ch]
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64 packages/net/drivers/eth/PLATFORM/current/src/...
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65 and reinstating them in
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66 packages/devs/serial/ARCH/PLATFORM/current/src/...
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67 packages/devs/eth/ARCH/PLATFORM/current/src/...
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68
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69 All these new packages are properly defined in ecos.db, and are
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70 all of type "hardware" so that a "target" can grab them.
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71
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72 This directory layout is descriptive of the devices we have right
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73 now, arch and platform are separate levels just to make it easier
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74 to navigate in the filesystem and similar to the HAL structure in
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75 the filesystem.
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76
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77 It is *not* prescriptive of future work; for example, the mythical
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78 common highly-portable 16550 serial driver which works on many
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79 targets would be called "devs/serial/s16550/current", or a serial
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80 device for a particular board (cogent springs to mind) that can
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81 work with different CPUs fitted is "devs/serial/cogent/current".
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82
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83 Changelogs have been preserved and replicated over all the new
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84 packages, so that no history is lost.
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85
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86 The contents of individual source files are unchanged; they build
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87 in just the same emvironment except for a very few cases where the
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88 config file name changed in this movement.
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89
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90 Targets in ecos.db have been redefined to bring in all relevant
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91 hardware packages including net and serial drivers (but the newly
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92 included packages are only active if their desired parent is
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93 available.)
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94
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95 The names of CDL options (and their #defines of course) stay the
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96 same for the serial drivers, for backward compatibility.
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97
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98 * templates/*/current.ect: these have had CYGPKG_IO_SERIAL added
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99 rather than it being in (almost) all target definitions.
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100
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101 2000-03-29 Hugo Tyson <hmt@cygnus.co.uk>
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102
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103 * src/if_ebsa285.c (i82559_recv): Be happy with NULLs in the
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104 SGlist; it means the caller is out of memory so drop the packet on
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105 the floor. Also remove a completely redundant test.
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106
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107 2000-03-06 Hugo Tyson <hmt@cygnus.co.uk>
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108
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109 * src/if_ebsa285.c (i82559_can_send): Update net driver to new
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110 interface style. This is incomplete wrt promiscuous mode, but
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111 that's probably about all.
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112
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113 2000-02-14 Gary Thomas <gthomas@cygnus.co.uk>
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114
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115 * cdl/ebsa285_eth_drivers.cdl: Update CDL to indicate multiple
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116 interface support.
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117
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118 2000-02-14 Hugo Tyson <hmt@cygnus.co.uk>
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119
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120 * src/if_ebsa285.c (pci_init_find_82559s): Tidy comments somewhat
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121 and set debug and stats collecting defines to most friendly
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122 settings.
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123
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124 2000-02-10 Hugo Tyson <hmt@cygnus.co.uk>
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125
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126 * src/if_ebsa285.c (PacketRxReady): Fix bug; current descriptor
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127 was not being write back for the callback to use. Hence asserts
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128 on state of rfd were firing in busy times - that leading rfd had
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129 already been drained.
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130
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131 Also rationalized meaning of DEBUG printy symbols a bit - it's now
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132 chatty during startup/foreground manipulations but not in any
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133 performance related activities ie. rx or tx.
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134
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135 2000-02-09 John Dallaway <jld@cygnus.co.uk>
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136
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137 * cdl/ebsa285_eth_drivers.cdl:
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138
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139 Reparent under CYGPKG_NET_ETH_DRIVERS and tidy display strings.
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140
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141 2000-02-08 Hugo Tyson <hmt@cygnus.co.uk>
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142
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143 * src/if_ebsa285.c: New File.
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144 * cdl/ebsa285_eth_drivers.cdl: New File.
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145
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146 Initial Checkin of EBSA285 Ethernet driver.
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147
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148 It's one monolithic file at present, and should be split up into a
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149 more generic Intel 82559 driver plus platform-specific parts (PCI
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150 et al) plus eCos/Red-Hat-BSD-stack parts.
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151
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152 //===========================================================================
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153 //####COPYRIGHTBEGIN####
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154 //
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155 // -------------------------------------------
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156 // The contents of this file are subject to the Red Hat eCos Public License
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157 // Version 1.1 (the "License"); you may not use this file except in
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158 // compliance with the License. You may obtain a copy of the License at
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159 // http://www.redhat.com/
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160 //
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161 // Software distributed under the License is distributed on an "AS IS"
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162 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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163 // License for the specific language governing rights and limitations under
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164 // the License.
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165 //
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166 // The Original Code is eCos - Embedded Configurable Operating System,
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167 // released September 30, 1998.
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168 //
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169 // The Initial Developer of the Original Code is Red Hat.
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170 // Portions created by Red Hat are
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171 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
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172 // All Rights Reserved.
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173 // -------------------------------------------
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174 //
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175 //####COPYRIGHTEND####
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176 //===========================================================================
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177
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178
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179